.box1{
    width: 100px;
    height: 100px;
    background-color:#bfa;
    &:hover .box2{
        display: block;
    }
    .box2{
        width: 50px;
        height: 50px;
        background-color:#fafa;
        display: none;
        display: flex;
        justify-content: space-between;
       
    }
}